Date: Thu, 08 Jan 2015 21:27:07 -0800 From: "Eric L. Camachat" <eric.camachat@gmail.com> To: freebsd-wireless@freebsd.org Subject: Re: [rft] net80211 scan overhaul, pass 1 Message-ID: <54AF66AB.5030609@gmail.com> In-Reply-To: <54AEA931.2030909@shurik.kiev.ua> References: <CAJ-Vmo=jfx2Y-ndjOojA-n8dJ=qrbYct5LsDKEqE8uuEiShzvw@mail.gmail.com> <54AEA931.2030909@shurik.kiev.ua>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 01/08/2015 07:58, Alexandr Krivulya wrote: > 04.01.2015 06:46, Adrian Chadd пишет: >> hi all, >> >> I've started overhauling the net80211 scan infrastructure so it can >> support fully-offloaded scan firmware (like the intel iwn(4) NICs, and >> the upcoming 7260 driver I'm hacking on.) >> >> I'd like this patch tested: >> >> https://people.freebsd.org/~adrian/net80211/20150103-net80211-scan-overhaul-1.diff >> >> This splits the scan code into two halves - the generic bits that >> drive when and what to do about scanning, and the bits that implement >> the software scanner. >> >> The software scanner is the bit that schedules channel changes, >> listens for probe response frames, adds them to the scan cache, aborts >> and goes back to the original channel when needed. It also tells the >> drivers that scanning is about to happen, so the driver can prepare to >> go off-channel for a bit. >> >> For the intel NICs (and other things, i'm sure) that do full scan >> offload, we just say "Hey, scan these channels, here's the SSIDs to >> actively probe for, tell me when you're done" and you get back probe >> response frames or scan command results with all the relevant >> information. The wireless stack doesn't have to control the process so >> fine-grained - as far as the stack and network interface is concerned, >> it's still associated and traffic is still queued as per normal. The >> NIC firmware itself takes care of scheduling the off-channel scan >> bits, sending the sleep frames as it goes off-channel temporarily, >> etc. It's supposed to be very transparent. We don't even have to send >> probe request frames during scanning - the firmware will do that for >> us. >> >> This work doesn't do all work required - it's just going to refactor >> out the scan bits. I still have to turn it into methods that intel and >> such can be overridden. I still have to go through and plumb the VAP >> power save state work so we don't actually send sleep/wakeup frames. >> All of that is done for us in the firmware. >> >> So I'd appreciate this getting some testing by FreeBSD-HEAD wifi >> users. If you see any issues then please let me know. I'm going to >> commit it in a couple of days so I can continue along the path of >> refactoring out this stuff and turning it into methods that the iwn >> and future drivers can override to implement their own scanning >> module. >> >> Thanks! >> >> >> >> -adrian >> _______________________________________________ >> freebsd-wireless@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-wireless >> To unsubscribe, send any mail to "freebsd-wireless-unsubscribe@freebsd.org" > I see your patch is already in HEAD. Works for me on Intel N2230 in > 11g-mode. > _______________________________________________ > freebsd-wireless@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-wireless > To unsubscribe, send any mail to "freebsd-wireless-unsubscribe@freebsd.org" > Mine worked fine, too. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iF4EAREIAAYFAlSvZqYACgkQSfBQu3oOwYzosQD/SoavMlhGkjQoeBOilUtF2X0k ReK6EEprOdr4qauk1iMA/jwgB++DpK/baUwghrZbLVKuq1Nis3bEr/vAvjTMWD3v =2L7y -----END PGP SIGNATURE-----
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